<template>
    <view class="cart-container" v-if="cart.length !== 0">
        <my-address></my-address>
        <!-- 商品列表的标题区域 -->
        <view class="cart-title">
            <!-- 左侧的图标 -->
            <uni-icons type="shop" size="18"></uni-icons>
            <!-- 右侧的文本 -->
            <text class="cart-title-text">购物车</text>
        </view>

        <!-- 循环渲染购物车中的商品信息 -->
        <uni-swipe-action>
            <block v-for="(goods, i) in cart" :key="i">
                <uni-swipe-action-item :right-options="options" @click="swipeItemClickHandler(goods)">
                    <my-goods :goods="goods" @radio-change="radioChangeHandler"
                        @num-change="numberChangeHandler"></my-goods>
                </uni-swipe-action-item>
            </block>
        </uni-swipe-action>
        <!-- 使用结算组件 -->

        <my-settle></my-settle>


    </view>
    <!-- 空白购物车区域 -->
    <view class="empty-cart" v-else>
        <image src="/static/cart_empty@2x.png" class="empty-img"></image>
        <text class="tip-text">空空如也~</text>
    </view>
</template>

<script>
    import badgeMix from '@/mixins/tabbar-badge.js'
    import {
        mapState,
        mapMutations
    } from 'vuex'
    export default {
        mixins: [badgeMix],
        computed: {
            ...mapState('m_cart', ['cart'])
        },
        data() {
            return {
                options: [{
                    text: '删除',
                    style: {
                        backgroundColor: '#C00000'
                    }
                }]
            };
        },
        methods: {
            ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount', 'removeGoodsById']),
            radioChangeHandler(e) {
                this.updateGoodsState(e)
            },
            numberChangeHandler(e) {
                this.updateGoodsCount(e)
            },
            swipeItemClickHandler(goods) {
                this.removeGoodsById(goods.goods_id)
            }
        }
    }
</script>

<style lang="scss">
    .cart-title {
        height: 40px;
        display: flex;
        align-items: center;
        padding-left: 5px;
        border-bottom: 1px solid #e8e8e8;

        .cart-title-text {
            font-size: 14px;
            margin-left: 10px;
        }
    }

    .cart-container {
        padding-bottom: 50px;
    }

    .empty-cart {
        display: flex;
        flex-direction: column;
        align-items: center;
        padding-top: 150px;

        .empty-img {
            width: 90px;
            height: 90px;
        }

        .tip-text {
            font-size: 12px;
            color: gray;
            margin-top: 15px;
        }
    }
</style>